Most patients do reasonably well if they keep to a diet that strictly curbs their intake of choline.

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The Institute of Medicine recommends that males ages 14 and up should consume 550 milligrams of choline each day.

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Uridine is a molecule used in the genetic coding for RNA, choline is in the vitamin B family, and DHA is found in certain fish and fish oils.

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Long sleep was associated with consuming less theobromine, which is found in chocolate and tea, the saturated fat dodecanoic acid, choline found in eggs and fatty meats and total carbohydrates.

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Milk, liver, peanuts and eggs also are naturally rich in choline, and studies have shown that it seems to play a role in metabolism, cell structure to the workings of brain neurotransmitters.

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The drink has three components -- uridine, choline, and the omega-3 fatty acid DHA -- that, working together, help restore synapses, said Dr. Richard Wurtman, professor at the Massachusetts Institute of Technology and co-author of the study.

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